Illuminated gauge



June 27, 1933.

J. w. MOTHER'WELL I LLUMINATED GAUGE Filed Oct. 5, 195D 2 Sheets-Sheet 2 Patented .lune 27, 1.933

IUNi'r-iszo STATES y 14,915,942fl JOSEPH: W. jivioriiEEWELL; ory iziELE'o'sE, MASSACHUSETTS, AssIeNoE To THE ASHTON VALVE COMPANY, or cAiviisEineE, MAsSAcHUsErrSnA' coREoEArroN or MASSA.

` Appucation'iea october 3,

My invention relates to the type of indicating gauge which has a dial illuminated so that the indication may be seen 'at night, for example. l

An object of my invention is to throw the light'directly along the face of the dial.

Another object is to provide such direct lighting fora gauge having twodials as, for example, when one is to be visible to the engineer at one side of a locomotive cab and the other visible to the fireman at the other Side of the cab.

Other objects and novel features will b pointed out below. l

In the drawings Figure 1 is a front elevation of a gauge embodying my invention, one cover being o en pFigure 2 is a Side elevation of the same; and Figure 3 is a section, on va larger scale, on

line 3 3 of Figure 1, both covers being closed.

In the gauge illustrated suitable perforated ears 1 are provided to attach the gauge to a support. Socket 2 is provided for the admission of pressure which, by any suitable mechanism, such as Bourdon tubes, will actuate indicator 3, which moves along the face of dial 4. Suitable-mechanism will similarly operate another indicator 3a, Figure 3, along the face of dial 5.k vThese dials are held, asl by screws 6, to the cylindrical casingv7 within which may be suitably located the mechanism for operating the indicators. The ears 1 and socket 2 are suitably attached to the casing 7. A circular glass member 8 to protect the indicator 3 and dial 4 is spaced by annular felt member 9 from casing 7, which has annular threading l0. Annular member 11 has an interior threading toengage the threading 10y and has, as shown, a vertical portion 12 to engage the outer edge of the glass member 8 and when the member 11 is Screwed inwardly the glass member 8 will be securely held in place. A similar glass member 13 and felt member 14 are clamped in place by annular member 15, Similar to member 11. The casing 7 has an arcuate slot 16 and an arcuate slot 17, these slots being adjacent respectively to dials 4 and 5 and `ILLiiiviIvixiAaiin GAUGE isao. Seriai No. 486,192. v

met v being covered by member 18, which is made of Celluloid or other vtransparent material and* which is curvedas shown clearly in Figure 1.'

A bracket 19 has downwardly. extending legs 2O and 21. 2() and through one end of member 18 and yengage casing 7 .y Similar vscrews 23 function in the Same way at the otherfside" of the casing.

A bridge member 24 connected at itsends' Screws 2,2 pass'through leg` to legs 20 and 21 engages, and aids in holding y in place, member 18 covering slots 16 and `17. On this bridge member is suitably mounted a bracket 25 to which .is attached lamp Socket 26 supporting electric lamp 27. Lead wirel 28 conducts,electricitytlirough boss 29 on leg 21 to binding post 30 and a similar lead wire 31 leads through said boss to another binding post, not necessary to be Shown, on the socket.

The lamp 27 is so llocated as to throw light through slot 16 and directly along the face of dial 5 and also through slot 17 and directly along the face of dial 4.

Suitably pivoted to the top of bracket'19 are covers 32 and 33. Cover 32 covers one side of theolamp and socket and a portion ofv annular member 11V and cover 33 covers the other side of the lamp and socket and a portion of annular member 15. When closed these covers t tightly against said annular' members andkeep dust and dirt and other extraneous` matter away from the lamp and lSocket and binding' posts. They may be so tightly closed l because the light passesl through said slots and does not have to pass between the lower portions of said covers and said annular members to reach the dials.

The covers may be opened separatelyv or toother purposes.

An important advantage of my gauge is that the light is directedl or thrown directly along, and substantially parallel with, the face of the dial which results in muchbetter and clearer illumination.

What I claim is:

gether for inspection of the parts or for 1. A gauge comprising twoseparate dial i members, one facing in one direction and the other facing in the opposite direction; a casing around said dials and having two openings; and a single lamp to direct light simultaneously through one of said openings along the face of one of said dials and through the other of said openings along the face of the other of said dials; and two covers pivotally mounted on the gauge, and centrally thereof, on a common horizontal pivot and giving ace Cess to said lamp. et one. side or the. other thereof when one 0,1 the other 0f the, covers. is open, said covers, when closed, being below the pivot and covering said means,l and re-v maining closed by the action of gravity.

2. A gauge comprising two stationary dials, one facing in one `direction and the other fecng in the Opposite direction; two, indicators., one cooperating with the face of 011e die@ and the otherl cooperating with the aceof the other dial; e Gesine for seid dials;

Slet in Said causing edfjecent to. one of Sei-,Cl

faces another slot in said casing adjacent te the other ef said feces; and e Single. temp,

to, direct lightl through seid slots: along the,

faces of said dials; and two covers pivotally mounted on the gauge, and centrally thereof, on a common horizotal pivot and giving access to said lamp at one side or the other thereof when one or the other of the covers is open, said covers, when closed, heing below the pivot and covering said means, and remain` on a commen horizontal pivot and givingaccess to said lamp. at one side or the other thereof when one or the other of the covers. 1s open, said covers, when closed, hei-ngbelovv the pivot and covering said means, endY remaining closed close-to the casing by the action of' gravity..

W. M@fllrllillllElllii` lili() 

